Harry and Hedwig are magically adorable on this 11-ounce Harry Potter Chibi Hedwig Heat-Sensitive Morphing Mug. Add hot liquid and watch as the heat-activated process magically transforms the ceramic mug from black to a vivid full-color image! Daydream about your own Owl Post delivery over coffee. Perhaps your Hogwarts letter is just a little late. Do not microwave. Hand wash only. Not dishwasher safe.